| The Columbia World of Quotations. 1996. |
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| NUMBER: | 9609 |
| QUOTATION: | All animals, except man, know that the principal business of life is to enjoy it. |
| ATTRIBUTION: | Samuel Butler (18351902), British author. The Way of All Flesh, ch. 19 (1903). |
| BIOGRAPHY: | Columbia Encyclopedia. |
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| | | The Columbia World of Quotations. Copyright © 1996 Columbia University Press. |
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